/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
#pragma once

#include <wtf/FastMalloc.h>

namespace JSC {

class Heap;
class JSCell;

class WriteBarrierBuffer {
public:
    WriteBarrierBuffer(unsigned capacity);
    ~WriteBarrierBuffer();

    void add(JSCell*);
    void flush(Heap&);
    void reset();

    unsigned* currentIndexAddress()
    {
        return &m_currentIndex;
    }

    unsigned capacity() const
    {
        return m_capacity;
    }

    JSCell** buffer()
    {
        return m_buffer;
    }

private:
    unsigned m_currentIndex;
    const unsigned m_capacity;
    JSCell** const m_buffer;
};

} // namespace JSC
